Disclosed is encapsulated active material product comprising: an active material encapsulated in a sol-gel derived material, the sol-gel derived material including a plurality of alkylsiloxy substituents and the sol-gel derived material obtained from:(a) at least one first alkoxysilane precursor having the formula:(R′O)3—Si—(CH2)n—Ar—(CH2)m—Si—(OR′)3 (1)where n and m are individually an integer from 1 to 8, Ar is a single-, fused-, or poly-aromatic ring, and each R′ is independently a C1 to C5 alkyl group and(b) optionally, at least one second precursor having the formula:where x is 1, 2, 3 or 4； y is 0, 1, 2, 3； z is 0, 1； the total of x+y+z is 4； each R is independently an organic functional group； each an R′ is independently a C1 to C5 alkyl group and R″ is an organic bridging group, where the sol-gel derived material is the volume of acetone per mass of the dry sol-gel derived composition, when placed in excess acetone and the sol-gel derived material swellable to at least five times its dry mass, when placed in excess acetone, and where the amount of active material encapsulated by the porous sol-gel composition is from about 150 to about 1100% w/w.
